Sienar Advanced Projects Laboratories was credited with some of the earliest developments concerned with harnessing the power of contained hypermatter. This research was eventually implemented in the development of the Death Star, proving incredibly effective in powering the immense station's power core. It also was responsible for designing the various models of the Advanced Project ship and the first mass-produced Twin Ion Engine starfighter. The laboratory also developed the TIE Advanced x1starfighter used by Darth Vader.

The laboratory was formed by Raith Sienar some time before 29 BBY. In its early years, it was responsible for producing custom products for the Trade Federation and other bodies.